Recent observations strongly suggest that the millisecond pulsar binary PSR J1023+0038 has developed an accretion disk since 2013 June. We present a multi-wavelength analysis of PSR J1023+0038, which reveals that 1) its gamma-rays suddenly brightened within a few days in June/July 2013 and has remained at a high gamma-ray state for several months; 2) both UV and X-ray fluxes have increased by r...

[This corrects the article DOI: 10.1186/s13221-016-0038-2.].

[This corrects the article DOI: 10.1186/s13033-016-0038-x.].

[This corrects the article DOI: 10.1186/s40337-015-0038-2.].

3FGL J1544.6-1125 is a candidate transitional millisecond pulsar (tMSP). Similar to the well-established tMSPs - PSR J1023+0038, IGR J18245-2452, and XSS J12270-4859 -- shows $\gamma$-ray emission discrete X-ray "low" "high" modes during its low-luminosity accretion-disk state. Coordinated radio/X-ray observations of J1023+0038 in current state showed rapidly variable radio continuum emission-p...

Based on observations collected at the European Southern Observatory, La Silla, Chile, using SOFI at the 3.5m NTT, within the observing programs 64.N-0038 and 68.D-0287

We have identified the 1.4 GHz radio source FIRST J102347.6+003841 (hereafter FIRST J1023+0038) with a previously unknown 17th-mag Galactic cataclysmic variable (CV). The optical spectrum resembles that of a magnetic (AM Herculisor DQ Herculis-type) CV. Five nights of optical CCD photometry showed variations on timescales of minutes to hours, along with rapid flickering. A re-examination of the...

-This paper presents a comprehensive on-line electrical characterization technique addressing the emerging Si/SiGe MOS technology. It demonstrates that the experimental high frequency and low frequency C V characteristics of Si/SiGe heterostructure MOS capacitors can provide accurate material-, process-, and device-related information such as: the valence band offset, Si cap layer thickness, su...

A model is proposed for the quantized accumulation layer based on the union of a two-dimensional electron gas contained in several energy subbands and a three-dimensional electron-gas distributed in a continuum of energy levels. The model is valid for both low and high temperatures and is formulated to allow the incorporation of quantum effects in a simulation based on classical models. It ther...

Submitted by ghoward on Mon, 09/08/2014 3:23pm Title Age-related underutilization of left ventricular function evaluation in older heart failure patients. Publication Type Journal Article Year of Publication 2002 Authors Ahmed, A, Allman, RM, DeLong, JF, Bodner, EV, Howard, G Journal South Med J Volume 95 Issue 7 Pagination 695-702 Date Published 2002 Jul ISSN 0038-4348